Aerospace / Military
Aerospace Series General Aviation Rod Ends Spherical Bearings Mil Spec Series Rod Ends Spherical Bearings Bushings Approved Part Numbers
Commercial / Industrial
Rod End Bearings Inch Rod Ends Metric Rod Ends Spherical Bearings Inch Spherical Bearings Metric Spherical Bearings
Technical Resources
Terms and Definitions Articles Technical Data FAQs Key Term Translation Custom Engineered Products
Online Catalog
Engineers power search our entire catalog of bearing and bushings, with access to every attribute and technical specification possible. View our online catalog...
Request Information
TNA bearings are similar to the TDO, but the inner race narrow faces are extended to abut and eliminate the need for a separate inner race spacer. Supplied with an in-built clearance to give a standard setting range, these bearings provide a solution for many fixed or floating bearing applications where simplicity of assembly is required.

Design Attributes:
  • Double cup and two single cones
  • Internal bearing clearance controlled by extending the front faces of the cones so they contact each other
  • SW variation features chamfers in the bores at the front faces of the two single cones to form a lubrication groove
  • SE variation features a backface rib design to accommodate radial lip seals or stamped closure
Unit of Measure

Key Dimensions

Cone Part Number

 N/A NA94700

Cup Part Number

 N/A 94118D

Design Unit

 N/A Inch

Bore (d)

 N/A 7.0000 in177.800 mm

O.D. (D)

 N/A 11.7500 in298.450 mm
Dynamic Radial Load Rating - 90M Revs (C90) 1 N/A 38500 lbf171000 N
Dynamic Radial Load Rating 2-Row - 90M Revs (C90-2row)2 N/A 67000 lbf298000 N
K Factor 3 N/A 1.25
e Factor 4 N/A 0.47

Other Dimensions

T - Bearing Width across Cones

 N/A 5.6250 in142.875 mm
Max Shaft Fillet Radius5 N/A 0.220 in5.50 mm
Max Housing Fillet Radius6 N/A 0.06 in1.5 mm

Outer Ring Width (C)

 N/A 4.375 in111.125 mm

Shaft Backing Shoulder Diameter - Backface (db)

 N/A 7.99 in203 mm

Housing Backing Shoulder Diameter - Frontface (Da)

 N/A 10.75 in272.03 mm

Weight

 N/A 83.46 lb37.85 Kg

Ratings

C1 - Dynamic Radial Rating (1 million revolutions)7 N/A 258000 lbf1150000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)8 N/A 30800 lbf137000 N

Factors

Y1 Factor 9 N/A 1.44
Y2 Factor 10 N/A 2.15
  • 1 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values.
  • 2 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values for a single-row, C90(2) is the two-row radial value.
  • 3 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 4 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 5 These maximum fillet radii will be cleared by the bearing corners.
  • 6 These maximum fillet radii will be cleared by the bearing corners.
  • 7 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
  • 8 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values for a single-row, C90(2) is the two-row radial value.
  • 9 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 10 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.